NEET Biology Biomolecules MCQs Set E

Question: Which of the following cell organelle is stored the information of synthesize Proteins 

• a) Nucleus
• b) Mitochondria
• c) Chloroplast
• d) Cell membrane

Answer: Nucleus

Question: Which of following elements are stored the information of Proteins?

• a) Nucleic acid
• b) Amino acid
• c) Polysaccharide
• d) Lipid

Answer: Nucleic acid

Question: Find out the Miss matched pairs:

• a) Protein – important compounds of nucleus
• b) Nucleic acid – major components of chromosomes
• c) Amino acid – an amphoteric compound
• d) Enzymes – Colloidal catalysts

Answer: Protein – important compounds of nucleus

Question: Which of the following are linked together to form Proteins ?

• a) Amino acids
• b) Sugar
• c) Nitrogen base
• d) Phosphate

Answer: Amino acids

Question: Which one of the following is incorrect for Protein:

• a) They possess C, H, O, N and P in their constitution
• b) They are very important compounds of cytoplasm
• c) They are heteropolymer of amino acids
• d) They transport some nutrients across cell membrane

Answer: They possess C, H, O, N and P in their constitution

Question: Total numbers of amino acids are involved in protein synthesis in Plants:

• a) 20
• b) 13
• c) 22
• d) 10

Answer: 20

Question: Which one is the most abundant protein in the animal world?

• a) Collagen
• b) keratin
• c) RUBISCO
• d) Hemoglobin

Answer: Collagen

Question: Full form of RUBISCO is:

• a) Ribulose Biphosphate Carboxylase Oxygenare
• b) Ribuose Bisulphate Carboxylase Oxygenare
• c) Ribuose Biphosphate Carboxylase Oxygenare
• d) Ribulose Bisulphate Carboxylase Oxygenare

Answer: Ribulose Biphosphate Carboxylase Oxygenare

Question: Match the items in column – I with appropriate items in column – II and pick up correct ans

Column – I           Column – II

(P) RUBISCO      (i) contractile protein

(Q) Keratin        (ii) insoluble protein

(R) Hemoglobin (iii) most abundant protein

(S) globular       (iv) conjugated protein

• a) P Q R S-iii ii iv i
• b) P Q R S-iii iv ii
• c) P Q R S-iv I iii ii
• d) P Q R S-I ii iv iii

Answer: P Q R S-iii ii iv i

Question: Polypeptide chain of amino acid is

• a) Protein
• b) Cellulose
• c) Glycogen
• d) Nucleic acid

Answer: Protein

Question: At high temperature proteins are

• a) A or b
• b) inactive
• c) Destroyed
• d) None of these

Answer: A or b

Question: The structure of protein can be destroyed by which rays

• a) Ultra violet rays
• b) Infra red rays
• c) Radio waves
• d) Micro waves

Answer: Ultra violet rays

More Questions..................................

Question: Amino acid is an amphoteric compound because

• a) It contains an amino group and a carboxyl group
• b) It contains an amino group and a functional group
• c) It contains a functional group and a carboxyl group
• d) It contains one H and a-R group

Answer: It contains an amino group and a carboxyl group

Question: The unique property of each amino acid is determined by its particular

• a) –R group
• b) peptide bond
• c) –NH₂ group
• d) –COOH group

Answer: –R group

Question: Which of the following is the most widely classification method of amino acid

• a) Lehninger method
• b) Linnaeus method
• c) Whittaker method
• d) Ernest chain method

Answer: Ernest chain method

Question: Which one is the correct group of amino acids with polar and negatively

• a) Glutamate, Aspartic acid
• b) Glutamate, Tyrosine
• c) Tryptophan, Proline
• d) Argentine, Lysine

Answer: Glutamate, Aspartic acid

Question: Find out the one group of amino acids which are related with each other

• a) Serine, Tyrosine
• b) Lysine, Laucine
• c) Glutamate, Proline
• d) Valine, Histidine

Answer: Serine, Tyrosine

Question: Aspartic acid and lysine are linkage each other with which bond

• a) Peptide bond
• b) Glycoside bond
• c) Ester bond
• d) Phosphodiaster bond

Answer: Peptide bond

Question: Match column – I and column –II and select the correct option

Column – I              column – II

(P)Arginine           (i) polar and negatively changed ‘R’ group

(Q) Glassine         (ii) non polar ‘R’ group

(R) Methionine     (iii) polar and positively changed ‘R’ group

(S) Aspartic acid  (iv) polar and ‘R’ group

• a) P Q R S-iii iv ii i
• b) P Q R S-ii I iv ii
• c) P Q R S-I iv ii iii
• d) P Q R S-iii ii iv i

Answer:  P Q R S-iii iv ii i

Question: Amino acids are attached each other with which bond?

• a) peptide bonds
• b) Hydrogen bonds
• c) Ester bonds
• d) Sulphur bonds

Answer: peptide bonds

Question: Dipeptide mean

• a) Two similar or dissimilar amino acids attached by peptide bond
• b) Two similar or dissimilar proteins attached by peptide bond
• c) Two similar amino acids attached by peptide bond
• d) Two dissimilar amino acids attached by peptide bond

Answer: Two similar or dissimilar amino acids attached by peptide bond

Question: Which macromolecule is the most diverse in cell and controlling biochemical Properties?

• a) Polypeptide
• b) Polynucleotide
• c) Polysaccharide
• d) polysomes

Answer: Polypeptide

Question: The primary structure of proteins is due to

• a) Peptide bonds
• b) Ionic bonds
• c) Hydrogen bond
• d) S-S Linkages

Answer: Peptide bonds

Question: Proteins means

• a) Macromolecule
• b) Soluble
• c) Colloidal
• d) Micromolecule

Answer: Macromolecule

Question: The structure of protein can be denatured by

• a) At high temperature
• b) In dilute solution of acid
• c) In the presence of CO₂
• d) a, b, c all

Answer: At high temperature

Question: Polypeptide means

• a) A polypeptide chains is formed by more than two amino acids
• b) A polypeptide chain is formed by more than two nucleotides
• c) A polypeptide chains is formed by many similar amino acids
• d) A polypeptide chain is formed by many similar nucleotides

Answer: A polypeptide chains is formed by more than two amino acids

Question: Which bimolecular fights against infectious organisms

• a) Protein
• b) Enzyme
• c) Nucleic acid
• d) Lipid

Answer: Protein

Question: Which one of the following is an amphoteric compound?

• a) Glutamic acid
• b) Fatty acid
• c) Nucleic acid
• d) Cellulose

Answer: Glutamic acid

Question: Which one of the following statement about amino acid is incorrect?

• a) They are very important compounds of cytoplasm
• b) All protein molecules are a heteropolymer of amino acid
• c) The structure of almost all amino acids are similar except their ‘R’ group
• d) They are classified on the basis of the ‘R’ group

Answer: They are very important compounds of cytoplasm

Question: Which of the following process is formed by – COOH linked to – NH₂ (peptide bond)

• a) Dehydrogenation
• b) Oxidation
• c) Reduction
• d) Hydrogenation

Answer: Dehydrogenation

Question: End of every polypeptide chain is known as

• a) Terminal
• b) Antenna
• c) Signal
• d) Template

Answer: Terminal

Question: Which are the terminals of polypeptide chain?

• a) ‘N’ and ‘C’ terminal
• b) ‘P’ and ‘R’ terminal
• c) ‘R’ and ‘N’ terminal
• d) ‘H’ and ‘N’ terminal

Answer: ‘N’ and ‘C’ terminal

Question: The secondary structure of protein means

• a) a, b, c all
• b) The folding of polypeptide chain due to the presence of hydrogen bond
• c) The helically coilde like polypeptide chain
• d) The flat and sheet like polypeptide chain

Answer: a, b, c all

Question: Which of the following is correct for the quaternary structure of protein?

• a) a and b both
• b) It represents a three dimensional form of whole protein
• c) It forms with interaction between different polypeptide Chain
• d) None of these.

Answer: a and b both

Question: What is the shape of the three dimensional structure of protein?

• a) Fibrous
• b) Globular
• c) Flat sheet like
• d) None of these.

Answer: Fibrous

Question: Which of the following is Dipeptide?

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Which of the following is an amino acid?

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Proteins Consist which one of the following

• a) One or more polypeptide chain
• b) One polypeptide
• c) One polypeptide chain
• d) None of these.

Answer: One or more polypeptide chain

Question: What –‘X’ indicates in the given figure

• a) C-terminal
• b) N-terminal
• c) P-terminal
• d) H-terminal

Answer: C-terminal

Question: Which is the correct option for the following diagram?

• a) Polypeptide chain
• b) Fibrous protein
• c) Globular protein
• d) Three dimensional form of protein

Answer: Polypeptide chain

Question: Which of the following bond groups are involved in the formation of quaternary Protein?

• a) Disulphide bond, Ionic bond
• b) Peptide bond, covalent bond
• c) Easter bond, phosphodiester bond
• d) None of these.

Answer: Disulphide bond, Ionic bond

Question: Which one is not correct for hemoglobin?

• a) It is a protein which imparts color to the body
• b) It is known as conjugated protein
• c) It is molecule which contains four hacme groups.
• d) None of these

Answer: It is a protein which imparts color to the body

Question: Find out the miss matched pair

• a) Immunoglobulin- responsible for movements of body
• b) Chlorophyll – must for photosynthesis
• c) Hemoglobin – transport of oxygen
• d) Melanin-imparts color to the body

Answer: Immunoglobulin- responsible for movements of body

Question: Which of the following statement is incorrect about lmmunoglobulin?

• a) It present in blood cell
• b) It consist of more than one polypeptide chain
• c) It has the property of immunity
• d) None of these

Answer: It present in blood cell

Question: What does the following diagram show?

• a) polypeptide chain
• b) Quaternary structure of protein
• c) Molecule structure of protein
• d) Secondary structure of protein

Answer: polypeptide chain

Question: Give the correct names of A, B and C shown in the figure

• a)

  

• b)

  

• c)

  Both

• d) None of these

Answer:

Question: The classification of the protein in two types depends on

• a) Structure and function
• b) Numbers of amino acid
• c) Types of amino acid
• d) None of these

Answer: Structure and function

Question: Which one molecule is finding a Weakly acidic substrate of unknown function in The nuclei of human WBC ?

• a) Nucleic acid
• b) nuclein
• c) Protein
• d) Chromosome

Answer: Nucleic acid

Question: Nuclein separated in to which components?

• a) Protein + Nucleic acid
• b) Nuceicoside + Nucleotide
• c) Protein + chromosome
• d) Nucleic acid + nitrogen base

Answer: Protein + Nucleic acid

Question: Which one of the following is the major component of chromosome?

• a) Nucleic acid
• b) Protein
• c) Nitrogen base
• d) Lipid

Answer: Nucleic acid

Question: Nucleic acid contains which group of molecules in their constitution?

• a) Small gene carrying bodies in the nuclei of complex cells
• b) A major components of chromosomes
• c) Polynucleotide of structural units known as nucleotides
• d) None of these

Answer: Small gene carrying bodies in the nuclei of complex cells

Question: Nucleic acids means

• a) Both a & b
• b) A major components of chromosomes
• c) Polynucleotide of structural units known as nucleotides
• d) None of these

Answer: Both a & b

Question: Which are the structural units of DNA?

• a) nucleotide
• b) Nitrogen base
• c) Pentose sugar
• d) phosphoric acid

Answer: nucleotide

Question: Which one group is the subunit of nucleotide?

• a) pentose sugar, Nitrogen base , phosphoric acid
• b) Nitrogen base, sugar
• c) Purina, pyrimidine, phosphorus
• d) Pentose sugar, nitrogen

Answer: pentose sugar, Nitrogen base , phosphoric acid

Question: Which of the following structure is correct for ribose sugar?

• a)

  

• b)

  

• c) Both
• d) None of these

Answer:

Question: Which one is the correct structure of phosphoric acid?

• a)

  

• b)

  

• c) both

Answer:

Question: Which of the following is correct for deoxyribose sugar?

• a)

  

• b)

  

• c) Both
• d) None of these.

Answer:

Question: Which of the following will be characteristically different in different living organism?

• a) Nucleic acid
• b) Carbohydrate
• c) Enzyme
• d) Protein

Answer: Nucleic acid

Question: Which one is not a polymer?

• a) Nucleotide
• b) Enzyme
• c) Enzyme
• d) ATP

Answer: Nucleotide

Question: The illustration given below is which nitrogen base

• a) Thymine
• b) Uracil
• c) Cytosine
• d) Ribose

Answer: Thymine

Question: The illustration given below is which nitrogen base

• a) Adenine
• b) Uracil
• c) Cytosine
• d) Guanine

Answer: Adenine

Question: The following diagram represents the nitrogenous bases of nucleic acid Molecules Identify the correct combination

• a) A= Guanine , B= Uracil
• b) A= Cytosine , B= Adenine
• c) A= Adenine , B= Thymine
• d) A= thymine , B= Guanine

Answer: A= Guanine , B= Uracil

Question: What is Ribonucleoside?

• a) Ribose + Nitrogen base
• b) Ribose + Adenine
• c) Ribose + Nucleic acid
• d) Ribose + Phosphate

Answer: Ribose + Nitrogen base

Question: What ‘A’ and ‘B’ indicates in the given diagram?

• a) CH₂, B= H
• b) A= CH, B= OH
• c) A= CH₂OH, B= H
• d) A= CH₂OH, B= OH

Answer: CH₂, B= H

Question: Which two sequential carbon number of nucleotides join through phosphodiaster bond?

• a) 3 and 5
• b) 1 and 4
• c) 1 and 6
• d) 2 and 5

Answer: 3 and 5

Question: What is Guanine?

• a) Purine
• b) Hormone
• c) Enzyme
• d) Pyrimidine

Answer: Purine

Question: Ribonucleoside formed from ribonucleotide while:-

• a) It made from phosphate
• b) It made from sugar
• c) It made from nitrogen base
• d) all above

Answer: It made from phosphate

Question: DNA is localized in which cell organelle?

• a) Nucleus, mitochondria, chloroplast
• b) Lysosomes
• c) Vacuoles
• d) Golgi apparatus

Answer: Nucleus, mitochondria, chloroplast

Question: A DNA stand is directly involved in the synthesis of all the following except –

• a) Protein
• b) m-RNA
• c) t- RNA
• d) t- RNA

Answer: Protein

Question: Nucleic acids were discovered by whom?

• a) Meischer
• b) Watson
• c) Wilkinson
• d) Crick

Answer: meischer

Question: Nucleic acids are related with which activity?

• a) Heredity
• b) Reproduction
• c) Respiration
• d) Digestion

Answer: Heredity

Question: What ‘A’ and ‘B’ indicates in the given structure?

• a) A=NH₂, B=NH
• b) A= NH, B= NH
• c) A= CH₂, B= N
• d) None of these

Answer:  A=NH₂, B=NH

Question: Chemically DNA differs from RNA by:

• a) Thymine and deoxyribose present in DNA and Uracil and ribose in RNA
• b) Uracil and deoxyribose in DNA and thymine and ribose in RNA
• c) Deoxyribose in DNA and ribose in RNA
• d) Two nucleotide in DNA and one nucleotide in RNA

Answer: Thymine and deoxyribose present in DNA and Uracil and ribose in RNA

Question: Nucleic acids are polymers of which molecules?

• a) Nucleotides
• b) Nucleosides
• c) Polypeptides
• d) polysomes

Answer: Nucleotides

Question: A molecule of ATP is structurally most similar to a molecule of?

• a) RNA
• b) Protein
• c) Lipid
• d) Amino acid

Answer: RNA

Question: Which is the site of protein synthesis?

• a) Polysomes
• b) Tonoplast
• c) DNA
• d) Chromosomes

Answer: Polysomes

Question: Select the specific base pairs of DNA

• a) Adenine and Thymine
• b) Adenine and Cytosine
• c) Guanine and Adenine
• d) Guanine and Uracil

Answer: Adenine and Thymine

Question: The DNA stands are antiparallel because of:

• a) Phosphodiester bond
• b) Hydrogen bond
• c) Disulphide bond
• d) Ester bond

Answer: Phosphodiester bond

Question: The distance between two chains of DNA molecules is

• a) 20 A°
• b) 34 A°
• c) 3.4 A°
• d) 10 A°

Answer: 20 A°

Question: The length of one complete spiral of DNA is:

• a) 34 A°
• b) 3.4 A°
• c) 20 A°
• d) 340 A°

Answer: 34 A°